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Fukushima Daiichi Nuclear Power Plant Accident: Understanding Formation Mechanism of Radioactive Particles through Sr and Pu Quantities.
Igarashi, Junya; Ninomiya, Kazuhiko; Zheng, Jian; Zhang, Zijian; Fukuda, Miho; Aono, Tatsuo; Minowa, Haruka; Yoshikawa, Hideki; Sueki, Keisuke; Satou, Yukihiko; Shinohara, Atsushi.
Afiliación
  • Igarashi J; Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
  • Ninomiya K; Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
  • Zheng J; Institute for Radiological Science, National Institute for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba 263-8555, Japan.
  • Zhang Z; Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
  • Fukuda M; Institute for Radiological Science, National Institute for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba 263-8555, Japan.
  • Aono T; Research Department, Fukushima Prefectural Centre for Environmental Creation, 10-2 Fukasaku, Miharu Town, Fukushima 963-7700, Japan.
  • Minowa H; Institute for Radiological Science, National Institute for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba 263-8555, Japan.
  • Yoshikawa H; The Jikei University School of Medicine, 3-25 Nishishinbashi, Minato Ward, Tokyo 105-0003, Japan.
  • Sueki K; The Jikei University School of Medicine, 3-25 Nishishinbashi, Minato Ward, Tokyo 105-0003, Japan.
  • Satou Y; Graduate School of Pure and Material, Tsukuba University, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan.
  • Shinohara A; Collaborative Laboratories for Advanced Decommissioning Science, Japan Atomic Energy Agency, 790-1 Otsuka, Motooka, Tomioka, Futaba, Fukushima 979-1151, Japan.
Environ Sci Technol ; 58(33): 14823-14830, 2024 Aug 20.
Article en En | MEDLINE | ID: mdl-39129255
ABSTRACT
The Fukushima Daiichi Nuclear Power Plant accident released considerable radionuclides into the environment. Radioactive particles, composed mainly of SiO2, emerged as distinctive features, revealing insights into the accident's dynamics. While studies extensively focused on high-volatile radionuclides like Cs, investigations into low-volatile nuclides such as 90Sr and Pu remain limited. Understanding their abundance in radioactive particles is crucial for deciphering the accident's details, including reactor temperatures and injection processes. Here, we aimed to determine 90Sr and Pu amounts in radioactive particles and provide essential data for understanding the formation processes and conditions within the reactor during the accident. We employed radiochemical analysis on nine radioactive particles and determined the amounts of 90Sr and Pu in these particles. 90Sr and Pu quantification in radioactive particles showed that the 90Sr/137Cs radioactivity ratio (corrected to March 11, 2011) aligned with core temperature expectations. However, the 239+240Pu/137Cs activity ratio indicated nonvolatile Pu introduction, possibly through fuel fragments. Analyzing 90Sr and Pu enhances our understanding of the Fukushima Daiichi accident. Deviations in 239+240Pu/137Cs activity ratios underscore nonvolatile processes, emphasizing the accident's complexity. Future research should expand this data set for a more comprehensive understanding of the accident's nuances.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Radioisótopos de Estroncio / Plutonio / Accidente Nuclear de Fukushima País/Región como asunto: Asia Idioma: En Revista: Environ Sci Technol Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Radioisótopos de Estroncio / Plutonio / Accidente Nuclear de Fukushima País/Región como asunto: Asia Idioma: En Revista: Environ Sci Technol Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos